Cannot use negative argument in function
On 29-02-2012, at 07:03, lidaky wrote:
Hi, today i wrote a function in R of the type: index.refraction <- function(Temp,Press, RH, CO2) When i try to plug a negative number in Temp, i got this type of error: " n <- index.refraction(Temp= -40,100,80,CO2) Messages d'avis : 1: In Ops.ordered(left, right) : '-' is not meaningful for ordered factors 2: In Ops.factor(left, right) : - not meaningful for factors 3: In Ops.factor(left, right) : - not meaningful for factors 4: In Ops.ordered(left, right) : '-' is not meaningful for ordered factors 5: In Ops.factor(left, right) : - not meaningful for factors 6: In Ops.factor(left, right) : - not meaningful for factors "
Without the code of your function we can only guess. Please follow the posting guide. Berend